The video snippet during protests around Martin Luther King Jr. Civic Center Park gained internet momentum even as city officials and police sorted through the fallout from the weekend violence.

On Monday, police released the names of 19 people arrested on various charges ranging from battery to assault with a deadline weapon. A 17-year-old girl, who was not named because she is a minor, was arrested for battery.

City officials promised to sort through more videos taken from nearby businesses and posted on social media, as they have done since violence also broke out March 4 at a similar rally and counter-protest. That one was planned by several of the same groups and also resulted in several injuries and arrests.

The violence on Saturday seemed mostly contained to the area near the park, where so-called alt-right conservatives supporting white nationalism and anti-fascist groups angrily opposing them converged in what had been billed as a free speech demonstration for President Trump supporters.

It quickly turned ugly with the two sides wasting no time going after each other, using fists, sticks and flagpoles. Eleven people were injured, including one person who was stabbed, police said. An update on the condition of those injured was not available from police Monday.

Among those throwing punches in a video was a man identified in several social media postings as Cal State University Stanislaus student Nathan Damigo, a self-proclaimed white separatist. Damigo’s name, however, was not included on the list released by the Alameda County Sheriff’s Office of suspects arrested.

In a statement Sunday, CSU Stanislaus President Ellen Junn said university staff had received word of a student’s involvement in Saturday’s melee.

“The university takes these allegations seriously, and as President, I have initiated an immediate investigation both on campus and at Berkeley to verify and confirm details of this incident to determine next steps to resolve this situation,” Junn said.

“The university has zero tolerance for the use of violence and we will take all of the necessary legal and disciplinary measures to ensure that all students and everyone on campus have a safe and secure environment,” she continued. “While this incident understandably raises many negative emotions and calls for urgent actions, we must also hold true to our American system and principles of justice and due process.”

The video, first posted on YouTube by WeAreChange.org, shows a man suspected to be Damigo hitting a woman in the face with his fist. The woman also appears to be coming aggressively at the man when the punch takes place.

Damigo did not immediately return an email request for comment.

The woman, Louise Rosealma, who said she was attacked, told KPIX-5 that she traveled to Berkeley from Southern California with her boyfriend and other friends to attend the protest. She said things got really intense 20 minutes after they arrived “before we got rushed” and everyone began to flee.

“The next thing I remember is turning around and from the corner of my eye I saw this fist coming at me,” said Rosealma, who belongs to Oak Roots, an anarchist organization, according to the group’s Facebook page. “I just put my hands up to push him away as much as I could. He just totally threw himself at me. He punched me on the bridge of my nose.”

She said the man fled after that.

Police in riot gear helped stop the protests and kept them from spreading to surrounding areas, city officials said. No downtown businesses reported any damage.

“People were pushing strollers down the street just a block away,” city spokesman Matthai Chakko said. “It was business as usual for the most part.”

The protests devolved into violence around 10 a.m. on Saturday when supporters of President Trump and anti-Trump demonstrators clashed. Trump backers and members of the so-called alt-right movement held a “free speech” rally, but Trump’s opponents, calling themselves anti-fascists, also appeared as the crowd grew to approximately 200.

Officers confiscated pepper and bear spray, knives, mace, an ax handle and a concrete-filled can during the protests, police said Sunday. City workers cleaning the park before the rally found a replica gun.

Staff writers Tom Lochner and George Kelly contributed to this report. Contact Rick Hurd at 925-945-4789.

Berkeley police released the following names of people charged on suspicion of related offenses Monday:

Kyle Chapman, 41, of San Francisco, for a warrant for battery from the March 4 Berkeley demonstration
John Cookenboo, 27, of Albany, for inciting a riot, possession of switchblade knife, and wearing a mask while committing a criminal offense
Jonathan Dalili, 32, of Berkeley, for battery
Allyn Jensen, 30, of San Francisco, for vandalism and wearing a mask while committing a criminal offense
Genevieve Jones, 27, of Berkeley, for battery and violation of a Berkeley municipal code
Dennis Luke, 36, of Huntington Beach, for assault with a deadly weapon
Sean O’Brien, 35, of Oakland, for violation of a Berkeley municipal code
Robert Peete, 51, of Berkeley, for assault with a deadly weapon
Addae Reciado, 19, of Richmond, for resisting/obstructing a police officer
Lee Robinson, 68, of Berkeley (nomad), for public intoxication
Levi Romero, 23, of Palmdale, for battery and violation of a Berkeley municipal code
Robert Rundo, 26, of San Clemente, for battery on a police officer and for resisting/obstructing a police officer
Nicholas Ryan, 24, of San Mateo, for battery and violation of a Berkeley municipal code
Rachel Schwarz, 33, of Oakland, for violation of a Berkeley municipal code and for resisting/obstructing a police officer
Robert Scott, 39, of Oakland, for battery and violation of a Berkeley municipal code
Christopher Smith, 37, of Martinez, for battery
Moira Vandewalker, 21, of Albany, for violation of a Berkeley municipal code and wearing a mask while committing a criminal offense
Enrique Yarce, 22, of Santa Rosa, for battery, violation of a Berkeley municipal code, wearing a mask while committing a criminal offense and resisting arrest
Vincent Yochelson, 23, of Oakland, for violation of a Berkeley municipal code and wearing a mask while committing a criminal offense
An unnamed female juvenile, 17, for battery